Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Qual é a cunhagem para uma localização de Sion e uma denominação de 00500 500 Francos?
 ###Tabelas: CREATE TABLE managerial_head_coach_changes (managerial_head_coach_changes_id AUTO_INCREMENT PRIMARY KEY, Team VARCHAR, Outgoing manager VARCHAR, Manner of departure VARCHAR, Date of vacancy VARCHAR, Incoming manager VARCHAR, Date of appointment VARCHAR) CREATE TABLE list_of_sovereign_nations_with_fewer_than_500000_people (list_of_sovereign_nations_with_fewer_than_500000_people_id AUTO_INCREMENT PRIMARY KEY, Rank INT, Country/territory/entity VARCHAR, Population INT, % of world population VARCHAR, Region VARCHAR) CREATE TABLE 20th-_and_21st-century_swiss_confederation_issues (20th-_and_21st-century_swiss_confederation_issues_id AUTO_INCREMENT PRIMARY KEY, Location VARCHAR, Date INT, Denomination VARCHAR, Coinage metal VARCHAR, Mintage INT, KM number VARCHAR) CREATE TABLE history_of_ggb_members (history_of_ggb_members_id AUTO_INCREMENT PRIMARY KEY, Alto 1 VARCHAR, Alto 2 VARCHAR, Tenor VARCHAR, Lead Tpt VARCHAR, Tpt 2 VARCHAR, Tpt 3 VARCHAR, Mello VARCHAR, Lead Bone VARCHAR, Bass Bone VARCHAR, Bass VARCHAR, Drums VARCHAR) CREATE TABLE cryengine (cryengine_id AUTO_INCREMENT PRIMARY KEY, Title VARCHAR, Year VARCHAR, Developer VARCHAR, Publisher VARCHAR, Platform VARCHAR)  
SELECT Mintage FROM 20th-_and_21st-century_swiss_confederation_issues WHERE Location = Sion AND Denomination = 00500 500 francs